EP 2329592 A1 20110608 - DOHERTY AMPLIFIER WITH INPUT NETWORK OPTIMIZED FOR MMIC
Title (en)
DOHERTY AMPLIFIER WITH INPUT NETWORK OPTIMIZED FOR MMIC
Title (de)
DOHERTY-VERSTÄRKER MIT EINEM FÜR MMIC OPTIMIERTEN EINGANGSNETZWERK
Title (fr)
AMPLIFICATEUR DOHERTY AYANT UN RÉSEAU D'ENTRÉE OPTIMISÉ POUR MMIC
Publication
Application
Priority
- EP 2009058283 W 20090701
- EP 08159978 A 20080709
- EP 09780072 A 20090701
Abstract (en)
[origin: WO2010003865A1] In a Doherty amplifier (100), the amplifier's input is connected to a main device (102) via a first branch and to a peak device via a second branch. The first branch has a first frequency - dependent input impedance with a first real part and a first imaginary part. The second branch has a second frequency-dependent input impedance with a second real part and a second imaginarypart. The first and second imaginary parts have opposite polarity. The first and 5 second imaginary parts have a same magnitude so as to compensate each other in the f requencyband. The first imaginary part and the second imaginary part implement a first phase shift in the. first branch and a second phase shift in the second branch, respectively. The first and second phase shifts each have a magnitude of substantially 45 degrees substantially in the middle of the frequency band and are of opposite polarity. The phase difference of the 10 input signals to the main (102) and peak (104) devices stays largely constant over the frequency band.
IPC 8 full level
H03F 1/02 (2006.01); H03F 3/195 (2006.01); H03H 7/38 (2006.01)
CPC (source: EP US)
H03F 1/0288 (2013.01 - EP US); H03F 3/195 (2013.01 - EP US); H03H 7/38 (2013.01 - EP US); H03F 2200/222 (2013.01 - EP US); H03F 2200/225 (2013.01 - EP US); H03F 2200/451 (2013.01 - EP US)
Citation (search report)
See references of WO 2010003865A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
WO 2010003865 A1 20100114; CN 102113207 A 20110629; EP 2329592 A1 20110608; US 2011210786 A1 20110901; US 8354882 B2 20130115
DOCDB simple family (application)
EP 2009058283 W 20090701; CN 200980130101 A 20090701; EP 09780072 A 20090701; US 200913003028 A 20090701